Observations on abnormal meiosis of pollen mother cells in Lilium davidii var.unicolor THE ABNORMALITY OF EMBRYO AND ENDOSPERM DEVELOPMENT IN SPRING WHEAT OF TWINS SEEDLING Chromosomal Numerical Variations in Regenerated Plants of 3 Species in Lilium Effects of temperature on Nicotiana stocktonii during microsporogenesis Effect of Low Temperature on Nucleolus and Chromosomes’ Behavior of Mango (Mangifera indica L.) PMC During Meiosis Effect of Low Temperature on Nucleolus and Chromosomes’ Behavior of Mango (Mangifera indica L.) PMC During Meiosis Observations on Abnormal Meiosis of Pollen Mother Cells in Paeonia suffruticosa subsp. spontanea The Development and Abnormality of Embryo and Endosperm in Trigrain Wheat Chromosomal Variation in Callus Subcultures of Fritillaria pallidiflora Effects of carbendazim, difenoconazole and azoxystrobin on mycelial growth and conidial germination of Alternaria suffruticosae Formation of microspores and development of male gametes in Paeonia jishanensis, with an analysis of factors of endangerment of this entity Microsporogenesis and Development of Male Gametophyte in Allium senescens L. (Liliaceae) ABNORMALITY AND DEVELOPMENT OF ANTHER IN RHEUM PALMATUM L